diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/i386/i386/support.s | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/sys/i386/i386/support.s b/sys/i386/i386/support.s index 967a09e..779fa38 100644 --- a/sys/i386/i386/support.s +++ b/sys/i386/i386/support.s @@ -181,11 +181,13 @@ END(bcopyb) * ws@tools.de (Wolfgang Solfrank, TooLs GmbH) +49-228-985800 */ ENTRY(bcopy) + pushl %ebp + movl %esp,%ebp pushl %esi pushl %edi - movl 12(%esp),%esi - movl 16(%esp),%edi - movl 20(%esp),%ecx + movl 8(%ebp),%esi + movl 12(%ebp),%edi + movl 16(%ebp),%ecx movl %edi,%eax subl %esi,%eax @@ -196,12 +198,13 @@ ENTRY(bcopy) cld /* nope, copy forwards */ rep movsl - movl 20(%esp),%ecx + movl 16(%ebp),%ecx andl $3,%ecx /* any bytes left? */ rep movsb popl %edi popl %esi + popl %ebp ret ALIGN_TEXT @@ -214,7 +217,7 @@ ENTRY(bcopy) std rep movsb - movl 20(%esp),%ecx /* copy remainder by 32-bit words */ + movl 16(%ebp),%ecx /* copy remainder by 32-bit words */ shrl $2,%ecx subl $3,%esi subl $3,%edi @@ -223,6 +226,7 @@ ENTRY(bcopy) popl %edi popl %esi cld + popl %ebp ret END(bcopy) |
